ASTROSAT CZTI

Data Quality Report

Orbit 24016

Creation date: 2024-06-27T19:01:10.865880
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_165T01_9000003558_24016cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24016cztM0_level2_quad_clean.evt
Size (bytes)455,647,680133,263,360
Size434.5 MB 127.1 MB
Events in quadrant A3,210,975910,624
Events in quadrant B3,243,270921,172
Events in quadrant C3,160,205879,323
Events in quadrant D3,735,521864,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137041
B0137061
C0135531
D0153931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6613510.771208%
B6614590.892047%
C6614721.088600%
D6614851.285153%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7538 6614 5 5 0.07% 0.08%
B 7539 6615 4 4 0.05% 0.06%
C 7539 6615 0 0 0.00% 0.00%
D 7539 6615 23 23 0.31% 0.35%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 75532 459.0 813 796 162.8
A 13 254 11056 63.01 813 796 162.8
A 0 226 7054 38.43 813 796 162.8
B 7 202 26657 172.41 806 785 150.1
B 10 247 21347 137.02 806 785 150.1
B 5 172 20785 133.28 806 785 150.1
C 14 238 124888 704.32 770 775 176.2
C 7 247 13997 75.03 770 775 176.2
C 3 233 13829 74.08 770 775 176.2
D 1 52 230589 1212.69 784 763 189.5
D 12 218 228107 1199.59 784 763 189.5
D 8 195 208837 1097.91 784 763 189.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter